Record

HS - Correspondence of Sir John Frederick William Herschel
- 25 - Correspondence of John Frederick William Herschel: volume 25 Copies of outgoing letters
  - 6 - Copy book of Sir John Herschel's outgoing correspondence, vol. 6, from 3 March 1840 to 27 September 1846

RefNo	HS/25/6/15
Level	Item
Title	Copy letter, from Sir John Herschel to James David Forbes, dated at Collingwood
Creator	John Frederick William Herschel
Recipient	James David Forbes
Date	15 November 1842
Description	Contemporary copy in sender's hand, signed by sender. Received James Forbes's paper on 'thermographic process.' Believes that thermic rays were responsible for experimental results of James Forbes, J. W. Draper, and Ludwig Moser. John Frederick William Herschel's theory of and experiments with thermic rays, which are different from 'calorific' and visible rays, in solar spectrum.
Language	English
Extent	4pp
Format	Manuscript
Place origin	Collingwood, Hawkhurst, Kent
Origin coordinates	51.035306, 0.513556
Digital images	View item on Science in the Making
AccessStatus	Open
URLDescription	Also available on Epsilon
URL	https://epsilon.ac.uk/view/herschel/letters/Herschel12742

Fellows associated with this archive

Code	PersonName	Dates
NA8238	Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer	1792 - 1871
NA6280	Forbes; James David (1809 - 1868); natural philosopher	1809 - 1868

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